OT - HELP - Bleeding Brakes GMC Yukon
Thread Starter
Rennlist Member
Joined: Jul 2009
Posts: 7,234
Likes: 10
From: Costa Mesa, CA
OT - HELP - Bleeding Brakes GMC Yukon
Hope one of you wrenches have a solution for me.
I replaced brake pads on my 2007 Yukon. While bleeding brakes, I cannot seem to get the air out of the front brake lines. The rears bleed just as you expect. The fronts keep getting significant amounts of air bubbles and the pedal depresses all the way to the floor
. I understand that the GM scan tool actually runs you through a bleed sequence and actuates the ABS solenoids. Is this the only option?
I replaced brake pads on my 2007 Yukon. While bleeding brakes, I cannot seem to get the air out of the front brake lines. The rears bleed just as you expect. The fronts keep getting significant amounts of air bubbles and the pedal depresses all the way to the floor
. I understand that the GM scan tool actually runs you through a bleed sequence and actuates the ABS solenoids. Is this the only option?
Rennlist Member
Joined: Jan 2004
Posts: 10,528
Likes: 173
From: NE Florida
Made the mistake once of going to answer the phone while I was bleeding the brakes on a Tahoe, big mistake. Vince, are you using a pressure bleeder? If no, try that first. Also, start the car and press the pedal down several times (not rapidly) then bleed it again.
If you need to borrow a Motive Bleeder I can loan you mine.
I took the Tahoe to a Chevy dealer to get them to finish flushing the brakes, they looked at me as in "why would you want to bleed the brakes?"
If you need to borrow a Motive Bleeder I can loan you mine.
I took the Tahoe to a Chevy dealer to get them to finish flushing the brakes, they looked at me as in "why would you want to bleed the brakes?"
Thread Starter
Rennlist Member
Joined: Jul 2009
Posts: 7,234
Likes: 10
From: Costa Mesa, CA
Thanks Bill,
I think I found the problem. The master cylinder is leaking. I was NOT using the pressure bleeder, because mine is a german only setup. We probably over extended the travel on the master during the bleed. I picked up a vacuum style bleeder at the parts store alongwith the master cylinder to finish up the job. Have you used the vacuum style bleeders? Would your motive work on the GM master cylinder?
I think I found the problem. The master cylinder is leaking. I was NOT using the pressure bleeder, because mine is a german only setup. We probably over extended the travel on the master during the bleed. I picked up a vacuum style bleeder at the parts store alongwith the master cylinder to finish up the job. Have you used the vacuum style bleeders? Would your motive work on the GM master cylinder?
Rennlist Member
Joined: Jan 2004
Posts: 10,528
Likes: 173
From: NE Florida
Thanks Bill,
I think I found the problem. The master cylinder is leaking. I was NOT using the pressure bleeder, because mine is a german only setup. We probably over extended the travel on the master during the bleed. I picked up a vacuum style bleeder at the parts store alongwith the master cylinder to finish up the job. Have you used the vacuum style bleeders? Would your motive work on the GM master cylinder?
I think I found the problem. The master cylinder is leaking. I was NOT using the pressure bleeder, because mine is a german only setup. We probably over extended the travel on the master during the bleed. I picked up a vacuum style bleeder at the parts store alongwith the master cylinder to finish up the job. Have you used the vacuum style bleeders? Would your motive work on the GM master cylinder?
I had/have a universal adapter that fits on the top and is secured by chain around the MC. It would be easier if you got the correct GM style cap though.
Advanced
Joined: Mar 2004
Posts: 98
Likes: 0
From: Greer, SC
I agree, I'd go with the pressure bleed over the vacuum. I used one on my Expedition w/the adapter a while back and it worked fine. A bit of a kluge but it worked. If your reservoir is plastic, watch not to over tighten the chain. Ken
Thread Starter
Rennlist Member
Joined: Jul 2009
Posts: 7,234
Likes: 10
From: Costa Mesa, CA
Got her back together and driving. You guys are right, the vacuum bleed method leaves alot to be desired. It got me through most of the process, but had to finish up with the old pump the brake pedal method to get a firm pedal.
Thanks for your help guys, and thanks Bill for the offer of your pressure bleeder!
Thanks for your help guys, and thanks Bill for the offer of your pressure bleeder!
